Improvement in artificial teeth



No. 38,078. PATENTED MAR. 3I, 1863p S. S. WHITE.

ARTIFICIAL TEETH.

Wag/messes block teeth constructed. according to my inmore secure andfirm attachment of artificial 2, 4, and 6 a block of two teeth.

- leaving a small ridge, 6, between it and the UNITED STATES SAMUEL S.WHITE, OF-PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT m ARTIFICIAL TEETH.

Specification forming part .of Letters Patent No. 38,073, dated March31, 1863.

To all whom it may eaneerm.

Be it known that I, SAMUEL S. WHITE, of the city of Philadelphia,.in thecounty of Philadelphia and State of Pennsylvania, have invented a newand useful Improvement in Artificial Teeth; and I do hereby declare thatthe following is a full, clear, and exact description of the same,reference being bad to the' accompanying drawings forming part of thisspecification, in which-- Figures 1 and 2 are inside face views ofvention. Figs. 3 and 4 are base views of the same. Figs. 5 and Garetransverse vertical sections of the same.

9 Similar letters of reference indicate corre-- spending parts in theseveral figures. The object of my invention is to obtain a teeth to abase or setting of vulcanite or other material in which they may besecured in the same manner as to vulcanite, and to this end it consistsin the construction of a single tooth or block of two or more teeth witha groove and ridges of peculiar formabove the lingual surface, and with.holes in the base of r the tooth or block converging toward each other,the said groove and holes receiving a portion of the vulcanite or othermaterial of which t:e base or setting is composed, and one of saidridges entering the said material for the purpose of securing the teethto the base in a permanent manner.

To enable others skilled in the art to make teeth according to myinvention, I will proceed to describe it-with reference .to thedraw- Thedrawings represent the application of the invention to blocks of teeth,Figs. 1, 3, and 5 representing a block of three, and Figs.

a a are the grooves, of V shape, extending across the whole width of thetooth or block at a short distance from the lingual surface,

lingual surface, and a more prominent ridge, 0', on the opposite side ofthe groove, the ridge b serving as a guide by which to finish 01f thevulcanite, the groove a receiving a portion of the vulcanite, and themore prominent ridge 0 entering the vulcanite.

d d are the converging holes in the base of the tooth or block, made asdeep as is consistent with the strength of the teeth, and convergingtoward each other, as shown in dotted lines in Figs. 1 and 2. Igenerally make two of these holes in each block or sinany strain in anoutward or inward direction, and the converging holes secure themagainst any tendency to pull them vertically from their setting, inwhich respect they have a great advantage over vertical and parallelholes in the base.

It will be obvious that the converging holes could be used in connectionwith some other means of resisting the inward and outward strain,-or thegroove and ridge in connection with dovetails or other means ofresisting a direct vertical pull.

What Iclaim as my invention, and desire to secure by Letters Patent, is-

1. The combination of the groove a and ridges b 0, extending the wholewidth of the block or tooth, the ridge 0, farthest from the lingualsurface, being made more prominent than the ridge b, next the lingualsurface, substantially as and for the purpose herein specified.

2. The arrangement of the holes e e in the base of the tooth or block,converging toward each other, substantially as and for the purposeherein described.

SAMUEL S. WHITE.

Witnesses:

SAMUEL T. J was, W. S. HAGARY.

